remove deprecated function

Author: 12345ieee

verifier.c

@@ -301,12 +301,6 @@ static void check_wrong_output_and_destroy(struct verifier *v, struct solution *
         destroy(solution, board);
 }
 
-void verifier_set_throughput_margin(void *verifier, int margin)
-{
-    // this doesn't do anything since there's no throughput margin any more.
-    return;
-}
-
 struct area_dimension {
     int64_t u;
     int64_t v;

verifier.h

@@ -53,10 +53,6 @@ int verifier_wrong_output_atom(void *verifier, int u, int v);
 // return -1 until another wrong output is detected.
 void verifier_wrong_output_clear(void *verifier);
 
-// this function is a no-op.  it used to set the size of the area used for
-// throughput loop detection.
-void verifier_set_throughput_margin(void *verifier, int margin);
-
 // returns a string describing any error that occurred during solution parsing,
 // decoding, or verification.  if there haven't been any errors, returns a null
 // pointer.  returned strings are valid for the lifetime of the program and